ASUS ROG G752: How much difference a GTX 1060 makes

Just how much better is ASUS' giant with a 10-series GPU from NVIDIA?
The last time this goliath of a laptop came across my desk, it was a pre-Pascal GPU world. That meant that while it still packed the highest mobile GPU at the time, it was still, theoretically anyway, a way off meeting the overall performance of the new cards.
Fast forward to 2017 and with 10-series GPUs now the norm for gaming laptops of all shapes and sizes, the G752 is back. It's still big and it still looks crazy, but the key improvement under the hood is the graphics. Is the newest refresh a significant improvement over the previous incarnation?
That's what we're here to find out.